diff --git a/douzero/server/battle.py b/douzero/server/battle.py
index 5eda2aa..0046b72 100644
--- a/douzero/server/battle.py
+++ b/douzero/server/battle.py
@@ -90,6 +90,7 @@ def battle_logic(flags, baseline : Baseline, battle : Battle):
         Baseline.create(**challenger_baseline)
     battle.challenger_wp = landlord_wp if battle.challenger_position == 'landlord' else farmer_wp
     battle.challenger_adp = landlord_adp if battle.challenger_position == 'landlord' else farmer_adp
+    battle.opponent_rank = baseline.rank
     battle.status = 1 if challenge_success else 2
     battle.save()
     if not challenge_success:
diff --git a/douzero/server/orm.py b/douzero/server/orm.py
index 24a44a7..9e66c45 100644
--- a/douzero/server/orm.py
+++ b/douzero/server/orm.py
@@ -28,6 +28,7 @@ class Battle(BaseModel):
   id = PrimaryKeyField()
   challenger_path = CharField(null = False, index = True)
   challenger_position = CharField(null = False)
+  opponent_rank = IntegerField(null = False)
   status = IntegerField(null = False, index = True)
   challenger_wp = DecimalField(null=True)
   challenger_adp = DecimalField(null=True)
diff --git a/evaluate_server.py b/evaluate_server.py
index 70cc25d..1c1cc99 100644
--- a/evaluate_server.py
+++ b/evaluate_server.py
@@ -275,7 +275,7 @@ if __name__ == '__main__':
     parser = argparse.ArgumentParser(description='DouZero evaluation backend')
     parser.add_argument('--debug', action='store_true')
     parser.add_argument('--enable_task', type=bool)
-    parser.add_argument('--update_threshold', type=float, default=0.06)
+    parser.add_argument('--update_threshold', type=float, default=0.09)
     parser.add_argument('--db_host', type=str, default='127.0.0.1')
     parser.add_argument('--db_schema', type=str, default='dou_model')
     parser.add_argument('--db_user', type=str, default='douzero')
diff --git a/static/charts.html b/static/charts.html
index 59f8577..da6c605 100644
--- a/static/charts.html
+++ b/static/charts.html
@@ -47,6 +47,7 @@
                             result[rank]['baseline'].landlord_up_path
                         },
                         colors: ['#e02f1b', '#a82314', '#1be02f', '#14a823', '#1bcce0', '#1499a8', '#2f1be0', '#2314a8'],
+                        symbols: ['circle', 'circle', 'triangle-down', 'triangle-down', 'square', 'square', 'triangle', 'triangle'],
                         yAxis: [
                             {
                                 title: {text: 'Win Rate (%)'},